From 925b33bdaabc7d07d6910d5696af1ff49287d8fa Mon Sep 17 00:00:00 2001
From: Christian Ehrlicher <ch.ehrlicher@gmx.de>
Date: Tue, 26 Nov 2019 19:32:21 +0100
Subject: [PATCH] QPlainTextEdit: update internal palette on
 QEvent::EnabledChange

QEvent::EnabledChange did not update the palette of the internal
QPlainTextEditControl which lead to a wrong text color when the
QPlainTextEdit was disabled e.g. due to a QGroupBox.
Fix it the same way it is done in QTextEdit - set the new palette also
to the internal control when QEvent::EnabledChange is received.

Fixes: QTBUG-80150
Change-Id: Icbeddf3d6cd4877a3d8d4a06b2da69383dd776d2
Reviewed-by: Friedemann Kleint <Friedemann.Kleint@qt.io>
Reviewed-by: Richard Moe Gustavsen <richard.gustavsen@qt.io>
---
 src/widgets/widgets/qplaintextedit.cpp | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/widgets/widgets/qplaintextedit.cpp b/src/widgets/widgets/qplaintextedit.cpp
index 0a81931b57..e8da720b58 100644
--- a/src/widgets/widgets/qplaintextedit.cpp
+++ b/src/widgets/widgets/qplaintextedit.cpp
@@ -2328,6 +2328,7 @@ void QPlainTextEdit::changeEvent(QEvent *e)
             d->autoScrollTimer.stop();
     } else if (e->type() == QEvent::EnabledChange) {
         e->setAccepted(isEnabled());
+        d->control->setPalette(palette());
         d->sendControlEvent(e);
     } else if (e->type() == QEvent::PaletteChange) {
         d->control->setPalette(palette());